# DigiServer v2 - Quick Deployment Guide

## 📋 Overview

DigiServer is deployed using Docker Compose with the following architecture:

```
Internet (User)
    ↓
Nginx Reverse Proxy (Port 80/443)
    ↓
Internal Docker Network
    ↓
Flask App (Gunicorn on Port 5000)
    ↓
SQLite Database
```

---

## 🚀 Quick Start (One Command)

```bash
cd /srv/digiserver-v2
bash deploy.sh
```

This will:
1. ✅ Start Docker containers
2. ✅ Initialize database
3. ✅ Run migrations
4. ✅ Configure HTTPS
5. ✅ Display access information

---

## 📦 Container Architecture

### **Container 1: digiserver-app (Flask)**
- **Image**: Built from Dockerfile (Python 3.13)
- **Port**: 5000 (internal only)
- **Volumes**:
  - `./data:/app` - Persistent application data
  - `./data/instance:/app/instance` - Database & configuration
  - `./data/uploads:/app/app/static/uploads` - User uploads
- **Startup**: Automatically initializes database on first run
- **Health Check**: Every 30 seconds

### **Container 2: nginx (Reverse Proxy)**
- **Image**: nginx:alpine
- **Ports**: 80 & 443 (exposed to internet)
- **Volumes**:
  - `nginx.conf` - Main configuration
  - `./data/nginx-ssl/` - SSL certificates
  - `./data/nginx-logs/` - Access/error logs
  - `./data/certbot/` - Let's Encrypt challenges
- **Startup**: Waits for Flask app to start
- **Health Check**: Every 30 seconds

---

## 🔧 Deployment Steps Explained

### **Step 1: Start Containers**
```bash
docker-compose up -d
```
- Builds Flask app image (if needed)
- Starts both containers
- Waits for containers to be healthy

### **Step 2: Database Initialization** (docker-entrypoint.sh)
When Flask container starts:
1. Create required directories
2. Check if database exists
3. If NOT exists:
   - Initialize SQLite database (dashboard.db)
   - Create admin user from environment variables
4. Start Gunicorn server (4 workers, 120s timeout)

### **Step 3: Run Migrations**
```bash
docker-compose exec -T digiserver-app python /app/migrations/[migration_name].py
```
Applied migrations:
- `add_https_config_table.py` - HTTPS settings
- `add_player_user_table.py` - Player user management
- `add_email_to_https_config.py` - Email configuration
- `migrate_player_user_global.py` - Global settings

### **Step 4: Configure HTTPS**
- SSL certificates stored in `./data/nginx-ssl/`
- Pre-generated self-signed certs for development
- Ready for Let's Encrypt integration

### **Step 5: Reverse Proxy Routing** (nginx.conf)
```
HTTP (80):
  • Redirect all traffic to HTTPS
  • Allow ACME challenges for Let's Encrypt

HTTPS (443):
  • TLS 1.2+, HTTP/2 enabled
  • Proxy all requests to Flask app
  • Security headers added
  • Gzip compression enabled
  • Max upload size: 2GB
  • Proxy timeout: 300s
```

### **Step 6: ProxyFix Middleware** (app/app.py)
Extracts real client information from Nginx headers:
- `X-Forwarded-For` → Real client IP
- `X-Forwarded-Proto` → Protocol (http/https)
- `X-Forwarded-Host` → Original hostname
- `X-Forwarded-Port` → Original port

---

## 📂 Directory Structure & Persistence

```
/srv/digiserver-v2/
├── app/                     (Flask application code)
├── data/                    (PERSISTENT - mounted as Docker volume)
│  ├── app/                  (Copy of app/ for container)
│  ├── instance/             (dashboard.db - SQLite database)
│  ├── uploads/              (User uploaded files)
│  ├── nginx-ssl/            (SSL certificates)
│  ├── nginx-logs/           (Nginx logs)
│  └── certbot/              (Let's Encrypt challenges)
├── migrations/              (Database schema updates)
├── docker-compose.yml       (Container orchestration)
├── Dockerfile               (Flask app image definition)
├── nginx.conf               (Reverse proxy configuration)
└── docker-entrypoint.sh     (Container startup script)
```

---

## 🔐 Default Credentials

```
Username: admin
Password: admin123
```

⚠️ **CHANGE IMMEDIATELY IN PRODUCTION!**

---

## 🌐 Access Points

After deployment, access the app at:
- `https://localhost` (if deployed locally)
- `https://192.168.0.121` (if deployed on server)
- `https://<DOMAIN>` (if DNS configured)

---

## ⚙️ Environment Variables (Optional)

Create `.env` file in project root:

```bash
# Network Configuration
HOSTNAME=digiserver
DOMAIN=digiserver.example.com
IP_ADDRESS=192.168.0.121

# SSL/HTTPS
EMAIL=admin@example.com

# Flask Configuration
SECRET_KEY=your-secret-key-here
FLASK_ENV=production

# Admin User
ADMIN_USERNAME=admin
ADMIN_PASSWORD=admin123
```

Then start with:
```bash
docker-compose up -d
```

---

## 🛠️ Common Commands

### **Start/Stop Containers**
```bash
# Start containers
docker-compose up -d

# Stop containers
docker-compose down

# Restart containers
docker-compose restart

# Restart specific container
docker-compose restart digiserver-app
docker-compose restart nginx
```

### **View Logs**
```bash
# All containers
docker-compose logs

# Follow logs (real-time)
docker-compose logs -f

# Specific container
docker-compose logs -f digiserver-app
docker-compose logs -f nginx

# Show last 50 lines
docker-compose logs --tail=50 digiserver-app
```

### **Container Status**
```bash
# Show running containers
docker-compose ps

# Show container details
docker-compose ps -a

# Check container health
docker ps --format="table {{.Names}}\t{{.Status}}"
```

### **Database Operations**
```bash
# Access database shell
docker-compose exec digiserver-app sqlite3 /app/instance/dashboard.db

# Backup database
docker-compose exec digiserver-app cp /app/instance/dashboard.db /app/instance/dashboard.db.backup

# Restore database
docker-compose exec digiserver-app cp /app/instance/dashboard.db.backup /app/instance/dashboard.db
```

### **Nginx Operations**
```bash
# Validate Nginx configuration
docker exec digiserver-nginx nginx -t

# Reload Nginx (without restart)
docker exec digiserver-nginx nginx -s reload

# View Nginx logs
docker-compose logs -f nginx
```

---

## 🔒 SSL Certificate Management

### **Generate New Self-Signed Certificate**
```bash
bash generate_nginx_certs.sh 192.168.0.121 365
docker-compose restart nginx
```

Parameters:
- `192.168.0.121` - Domain/IP for certificate
- `365` - Certificate validity in days

### **Set Up Let's Encrypt (Production)**
1. Update `DOMAIN` and `EMAIL` in environment
2. Modify `nginx.conf` to enable certbot challenges
3. Run certbot:
   ```bash
   docker run --rm -v $(pwd)/data/certbot:/etc/letsencrypt \
     -v $(pwd)/data/nginx-logs:/var/log/letsencrypt \
     certbot/certbot certonly --webroot \
     -w /var/www/certbot \
     -d yourdomain.com \
     -m your-email@example.com \
     --agree-tos
   ```

---

## 🐛 Troubleshooting

### **Containers not starting?**
```bash
# Check docker-compose logs
docker-compose logs

# Check system resources
docker stats

# Restart Docker daemon
sudo systemctl restart docker
```

### **Application not responding?**
```bash
# Check app container health
docker-compose ps

# View app logs
docker-compose logs -f digiserver-app

# Test Flask directly
docker-compose exec digiserver-app curl http://localhost:5000/
```

### **HTTPS not working?**
```bash
# Verify Nginx config
docker exec digiserver-nginx nginx -t

# Check SSL certificates exist
ls -la ./data/nginx-ssl/

# View Nginx error logs
docker-compose logs nginx
```

### **Database issues?**
```bash
# Check database file exists
ls -la ./data/instance/dashboard.db

# Verify database permissions
docker-compose exec digiserver-app ls -la /app/instance/

# Check database tables
docker-compose exec digiserver-app sqlite3 /app/instance/dashboard.db ".tables"
```

### **Port already in use?**
```bash
# Find process using port 80
sudo lsof -i :80

# Find process using port 443
sudo lsof -i :443

# Kill process (if needed)
sudo kill -9 <PID>
```

---

## 📊 Health Checks

Both containers have health checks:

**Flask App**: Pings `http://localhost:5000/` every 30 seconds
**Nginx**: Pings `http://localhost:80/` every 30 seconds

Check health status:
```bash
docker-compose ps
# Look for "Up (healthy)" status
```

---

## 🔄 Database Backup & Restore

### **Backup**
```bash
# Create backup
docker-compose exec digiserver-app cp /app/instance/dashboard.db /app/instance/dashboard.backup.db

# Download to local machine
cp ./data/instance/dashboard.backup.db ./backup/
```

### **Restore**
```bash
# Stop containers
docker-compose stop

# Restore database
cp ./backup/dashboard.backup.db ./data/instance/dashboard.db

# Start containers
docker-compose up -d
```

---

## 📈 Performance Tuning

### **Gunicorn Workers** (docker-entrypoint.sh)
```bash
# Default: 4 workers
# Formula: (2 × CPU_count) + 1
# For 4-core CPU: 9 workers

# Modify docker-entrypoint.sh:
gunicorn --workers 9 ...
```

### **Nginx Worker Processes** (nginx.conf)
```nginx
# Default: auto (CPU count)
worker_processes auto;

# Or specify manually:
worker_processes 4;
```

### **Upload Timeout** (nginx.conf)
```nginx
# Default: 300s
proxy_connect_timeout 300s;
proxy_send_timeout 300s;
proxy_read_timeout 300s;
```

---

## 🔐 Security Checklist

- [ ] Change admin password immediately
- [ ] Set strong `SECRET_KEY` environment variable
- [ ] Enable firewall rules (allow only ports 80, 443)
- [ ] Set up HTTPS with Let's Encrypt
- [ ] Configure regular database backups
- [ ] Review Nginx security headers
- [ ] Update Flask dependencies regularly
- [ ] Monitor container logs for errors
- [ ] Restrict admin panel access (IP whitelist optional)
- [ ] Enable Flask debug mode only in development

---

## 📞 Support & Documentation

- **Nginx Setup**: See `NGINX_SETUP_QUICK.md`
- **ProxyFix Configuration**: See `PROXY_FIX_SETUP.md`
- **Deployment Commands**: See `DEPLOYMENT_COMMANDS.md`
- **Issue Troubleshooting**: Check `old_code_documentation/`

---

## ✅ Deployment Checklist

- [ ] Docker & Docker Compose installed
- [ ] Running from `/srv/digiserver-v2` directory
- [ ] Environment variables configured (optional)
- [ ] Port 80/443 available
- [ ] Sufficient disk space (min 5GB)
- [ ] Sufficient RAM (min 2GB free)
- [ ] Network connectivity verified
- [ ] SSL certificates generated or obtained
- [ ] Admin credentials changed (production)

---

## 🚀 Next Steps After Deployment

1. **Access Web Interface**
   - Login with admin credentials
   - Change password immediately

2. **Configure Application**
   - Set up players
   - Upload content
   - Configure groups & permissions

3. **Production Hardening**
   - Enable Let's Encrypt HTTPS
   - Configure firewall rules
   - Set up database backups
   - Monitor logs

4. **Optional Enhancements**
   - Set up custom domain
   - Configure email notifications
   - Install optional dependencies (LibreOffice, etc.)

---

**Last Updated**: January 15, 2026